diff --git a/Some-sort-of-list.md b/Some-sort-of-list.md
index 622b148..73d7149 100644
--- a/Some-sort-of-list.md
+++ b/Some-sort-of-list.md
@@ -3,7 +3,6 @@
 - ponder cursor delta callback or input mode
 - FPS control example
 - nutshell guide
-- fix particle example
 - precise refresh rate sample code
 - finish moving website to GitHub pages
 - add frameworks like LWJGL and libGDX to website